import 'package:flutter/material.dart';

class MyDetail extends StatelessWidget {
  MyDetail({
    Key? key,
    required this.text, // 接收一个text参数
  }) : super(key: key);
  final String text;

  @override
  Widget build(BuildContext context) {
    // return MaterialApp(
    //   title: 'Flutter Demo',
    //   theme: ThemeData(
    //     primarySwatch: Colors.blue,
    //   ),
    //   home: MyHomePage(title: 'Flutter Demo Home Page'),
    // );
    return MyHomePage(title: text);
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key? key, required this.title}) : super(key: key);
  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.headline4,
            ),
            TextButton(
              onPressed: () {
                Navigator.pop(
                  context,
                  '我是返回值',
                );
              },
              child: const Text('返回'),
            ),
          ],
        ),
      ),
      floatingActionButton: new FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: new Icon(Icons.add),
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}
